in real-time, a tap detects only static, rendering the harvested data useless. Because no valid signal can be stored, these systems provide resilience against future decryption threats, including attacks by quantum computers. Recent implementations have demonstrated this protection on high-speed (100 Gbit/s) links over legacy networks.

The U.S. government has been concerned about the tapping threat for many years. In the context of classified information on United States Department of Defense